Problems from The 2020 ICPC Vietnam National Contest

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Astrological Sign0.002781386119086%2.5Easyen
Battle of Hogwarts0.0673327421679%5.4Mediumen
Cable Car0.00282985354%8.0Harden
Dividing Kingdom0.3416241037674%5.7Harden
Easy Arithmetic0.061656955255%7.7Harden
Fluffy Cat0.011432382258%7.9Harden
Greatest Pair0.3314341208369%6.3Harden
Highway to Mount Fansipan0.0334728622880%4.1Mediumen
Infinite 2D Array0.0445620214873%5.5Harden
Just Enough Water0.0042715913585%4.4Mediumen
Kingdom of Cats0.0027723418077%5.1Mediumen
Looping Around0.471858714259%7.4Harden
Malfunctioning Robot0.007446735175%3.8Mediumen